MAHLE RTI RRC770 User Manual

OPERATION

&

MAINTENANCE

MANUAL

RRC770

Refrigerant Management Center

RTI Technologies, Inc.

4075 E. Market St.

P.O. Box 3099

York, PA 17402

800-468-2321 (Extension 259)

www.rtitech.com

Manual P/N 035-80437-00

TABLE OF CONTENTS

RRC770

Before Using ........................... 2

Safety Precautions ...................... 3

Filling the Charge Cylinder ............... 5

Recover/Recycle ........................ 6

Oil Drain & Air Purge .................... 8

Deep Vacuum ............................ 9

Hose Evacuation ......................... 10

Charge/High Side ........................ 11

Scheduled Maintenance & Filter Maintenance 13

Problems & Solutions .................... 14

Flow Diagram ........................... Appendix

Schematic Diagram ....................... Appendix

CONGRATULATIONS:

You have purchased one of the finest Recovery, Recycling, and Charging
Machines available! Fill out and return the Warranty Card within 90
days to activate warranty and free lifetime technical support.

RTI Technologies, Inc.

BEFORE USING THE RRC770

Check for any shipping damage. Place a claim with carrier if damage is
discovered.

DO NOT USE A DAMAGED UNIT.
Complete and return the Warranty Card to activate technical support

service and warranty coverage:

Warranty claims can not be honored without this warranty card on file.

The RRC770 should not be operated or serviced by any person who has not
read all the contents of this manual. Failure to read and comply with
these instructions or any one of the limitations noted herein can result in
serious injury and/or property damage.

These general instructions describe normal operation and maintenance
situations encountered with the RRC770. The instructions should not be
interpreted to anticipate every possible contingency.

It is the responsibility of the owner/user to operate the RRC770 in
accordance with all specifications and laws which may apply.

The following pages contain rules for safe operation of the RRC770. Taking
precedence over any specified rule listed herein, however, is the most
important rule of all:

"USE COMMON SENSE"

A few minutes spent reading these instructions can make an operator aware
of dangerous practices to avoid and precautions to take for his own safety
and the safety of others.

A regular schedule of inspection of the RRC770 should be established and
records maintained with special attention given to Hoses, Compressor Oil
Level, Moisture Indicator, and Filters.

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RTI Technologies, Inc.

SAFETY PRECAUTIONS

! Recover, Recycle, and Charge only the refrigerant for which the

machine is configured.

! Wear safety glasses and protective gloves. Refrigerant has a very low

boiling point and can cause frostbite.

! Follow the RRC770 operating procedures sequentially to avoid

prematurely disconnecting hoses or opening valves which may release
refrigerant to the atmosphere.

! Do not expose the RRC770 to moisture or operate in wet areas.
! Use the RRC770 in locations with mechanical ventilation that provides

at least four air changes per hour.

! Hoses used with the RRC770 must have shutoff devices within 12 inches

of the connection point to the system being serviced to minimize the
introduction of Non-condensable Gas (Air) into the RRC770 and the
release of refrigerant when being disconnected.

! Disconnect power before performing any maintenance or service on the

RRC770.

! Avoid using an extension cord with the RRC770. If necessary, use a good

condition, UL listed, 3-wire grounded, #14 AWG, or larger, extension
cord of the shortest possible length.

! Connect the RRC770 to a properly grounded receptacle. Do not over

load the circuit.

! Do not allow the RRC770 to remain unattended in the Charge Mode with

power On. The Charge Cylinder Heater will be energized creating a high
pressure condition.

NEVER TURN THE CYLINDER UP-SIDE-DOWN.
DO NOT CONNECT THE RRC770 TO THE LIQUID SIDE OF

ANY A/C SYSTEM WITH A CAPACITY GREATER THAN 4 LBS.
REFRIGERANT IN A/C SYSTEMS HAVING LARGER CAPACITIES

MUST BE RECOVERED FROM THE VAPOR SIDE ONLY.
NEVER CONNECT THE RRC770 TO THE LIQUID PORT OF A

CYLINDER OF REFRIGERANT TO FILL THE RRC770 CHARGE

CYLINDER.
FAILURE TO FOLLOW THE ABOVE MAY CAUSE THE RRC770 COMPRESSOR TO

FAIL AND VOID THE WARRANTY.

3September 28, 1999 Page 3

RTI Technologies, Inc.

L CAUTION 7

Avoid breathing refrigerant or lubricant vapor or mist.

Exposure may irritate eyes, nose and throat.

If accidental system discharge occurs, ventilate work area before
continuing.

Additional health and safety information may be obtained from
refrigerant and lubricant manufacturers.

Special Considerations with R134a

R134a has been shown to be nonflammable at ambient temperature
and atmospheric pressure. However, tests under controlled
conditions have indicated that, at pressures above atmospheric and
with air concentrations greater than 60% by volume, R134a can form
combustible mixtures.

While it is recognized that an ignition source is also required for
combustion to occur, the presence of combustible mixtures is a
potentially dangerous situation and should be avoided.

Under no circumstances should any equipment be pressure tested or
leak tested with Air/R134a mixtures. Do not use compressed air
(shop air) for leak detection in R134a systems.

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RTI Technologies, Inc.

FILLING THE CHARGE CYLINDER

A/C Systems requiring service often do not have a full charge of refrigerant.
The RRC770 should be filled until about 3 pounds of liquid refrigerant can be
seen in the Charging Cylinder Sight Glass. The Sight Glass is visible through
a slotted opening on the side of the RRC770.

Figure 1 Filling the Charge Cylinder

To fill the RRC770 Charge Cylinder, refer to Figure 1 and follow these steps:

1. Connect the Red and Blue Hoses to the side of the RRC770, and close the

valves on the end of each hose.

1. Connect the short Yellow Hose provided to the Rear Port of the RRC770
and to the VAPOR port of a cylinder of new or recycled refrigerant. An
adapter is provided with the RRC770 (R134a) which permits the Field
Service Coupler to be attached to the .500 ACME fitting on the cylinder of
refrigerant.

If the cylinder has two ports, observe that the embossed marking on the
cylinder knob says VAPOR or GAS. Do not rely on color coding of the knobs
on the valves.

DO NOT CONNECT TO THE LIQUID VALVE. DO NOT TURN THE CYLINDER UP­SIDE-DOWN. INTRODUCTION OF LIQUID MAY DAMAGE THE COMPRESSOR AND
VOID THE WARRANTY.

2. Press top (ON) of rocker switch marked POWER ON/TEST.

3. Press top (ON) of rocker switch marked RECOVER/RECYCLE.

The green COMPRESSOR RUNNING Light will illuminate and liquid refrigerant
will rise in the Charging Cylinder Sight Glass. When the level is
approximately 3 lbs, close the valve on the refrigerant cylinder. Allow the
RRC770 to continue to run until the Low Pressure Gauge is in a vacuum and the
COMPRESSOR RUNNING Light stays out for at least two minutes. This will
empty the Yellow Hose.

4. Press bottom (OFF) of rocker switch marked RECOVER/RECYCLE.

5. Press bottom (OFF) of rocker switch marked POWER ON/TEST.

5September 28, 1999 Page 5